my66s55

Here's a good example of the difference between a part that's printed on my filament machine and the dlp machine. Last picture is the stl file,first is the filament print and the other 2 are the dip print.

Until the resin won't print good anymore. There are guys reporting 2 and three weeks and everything is still good. The resin and salt water don't ever mix. If you stir the vat up, the resin only rises to the top. The resin can also be drained off the top.

Thanks Chief. I looked at both bottom up and top down pros and cons and decided to do a top down. There has just been too much in the way of problems with the flex vat. The main draw back originally with the top down was the high cost of resin and the fact that you could only built to the depth of the vat. The flex vat bottom up has a high print failure rate due to tearing of the print during the flexing. Also problems with larger prints not being able to separate from the vat. The cost of resin is now less than half what it was 2 years ago. You fill the vat up to about 2 or three inch from the desired resin height with salt water and then top it off with resin.

Resin is resin. Cut it. Sand it. Paint it. Isn't harmed by chemicals including break fluid, acetone, alcohol, yada,yada,yada. You can electroplate it. Doesn't contains any v.o.c. Just resin. Comes in a variety of colors and consistency. Soft and flexible like you would want for making tires. I'm printing one out now, as that is the resin I bought. General purpose which is hard, but not brittle and castable for making thing like jewelry.

Chris, I built the printer. I have less than 1k in it. The most expensive purchase was the Acer 6510db dlp projector. It ran $607, but is considered one of,if not, the best. Makerbots are filament layering printers like my diy Prussa I3 in my avatar. Not really something you would not want to consider. Formlabs1 is an sla printer. That is, it uses a laser to cure the same uv resins that the dlp beam does. The B9 creator will go to 25-30 microns. Where it can get confusing is understanding 3d printing and these numbers. I may very well get to a 10 micron layer height, but that isn't really needed unless you like to wait a long time to print something. My engine block was printed at 100 microns layer height. The height is the z axis. x & y are the side to side and front to back axis. A filament printer uses all three. The laser printer uses all three. that is what creates a non smooth surface. It is also very time consuming. A dlp printer projects a beam of uv light that cures an entire layer in 3 to 6 seconds. There is only an x axis that moves. It took 39 minutes to print this engine block. I could easily add 3 to 5 more on the build platform and print 4 to 6 engine blocks in the same 39 minutes.

There you are William. This print and this post topic was done with you in mind. You kept asking to see a detailed, usable 1/25 engine block and I kept trying to tell you it was out there. Now you can see it for yourself. No, this is a different style printer than the one in my avatar. I finished the one in my avatar a year and a half ago and have done some amazing prints with it, but it could never do a print like this. It is a filament style printer.

Believe me or not Bill, It took 40 minutes for the software to slice 169 layers @ 100 microns and took 39.19 minutes to print it.

All DLP 3d printers are based on open source development from this blog: http://www.instructables.com/id/DIY-high-resolution-3D-DLP-printer-3D-printer/step1/Basic-design-properties/. Mine, which I built, the B9 Creater, etc. The software, Creation Workshop, was developed by Steve Hernandez. Steve started this forum: http://www.buildyourownsla.com/forum/ last December. You should be able to answer any inquiries by resourcing this info.

The pictures don't do the print justice. The detail is incredible. This is the same type printer as a B9 Creator. Jewelers are using the B9 to make jewelry.

No. It's the color of the resin. The resin is uv light cured. This is not done on a filliment printer.

This is the stl filed I used.

Fresh off my DLP printer.

It looks real to me.

Whoa ho. Ego, ego, ego.

I refer you to Snakes post here http://www.modelcarsmag.com/forums/index.php?showtopic=93829 . I think you and the op are bright enough to figure it out from here.

My vote goes for model.

Wecome to another local guy.

Wecome Snake. You know me from the retro board. You will enjoy it here.

For your edification Harry, Bottle of Wine, Fruit of the Vine was recorded and released in the sixties as folk rock by Chicagoan Tom Paxton. You know, folk rock, Bob Dylan, Peter, Paul and Mary, The Birds,etc.

There we go. Good song. The Troggs. Wild thing, you make my heart sing. Count Five Psycodelic Reaction. Paul Revere and the Raiders and the Kinks. Yeah, now you' talkin.

Yes. Anything is better than "A double shot of my babies love", I was there. I'm 69 years old. Grew up in the burbs of Detroit. You know, Motown and all that good blank. That song was BLAH_BLAH_BLAH_BLAH, Was then, is now.

Hate that song. Got it on my flash drive, but hate it. All the good songs out at the time of this one and then this. ugh! this one was better. Bottle of wine Fruit of the vine When you gonna let me get sober? Leave me alone Let me go home Let me go home and start over

come on you guys, I can't beleive you couldn't get my last two. Try this one: Back over time when we were all trying for free Met up with porpoise and me No right no wrong you're selling a song, a name Whisper game

Gilbert O'Sullivan. Get down. Clair is my favorite.

If he brings you happiness Then i wish you all the best It's your happiness that matters most of all But if he ever breaks your heart